The story is told about the Vilna Gaon that one year, there were no esrogim to be found. Someone managed to get one, and offered it to the Gaon on condition that the reward for the mitzva be his. The Gaon readily agreed, and rejoiced that he was able to do the mitzvah shelo al m’nas l’kabel p’ras.
This is a debate in itself exactly how one can give away the reward of the Mitzvah to somebody else. I think we’ve argued it out before, when some genius decided to sell his Oilom Habo on ebay.
The question is “would”, though, and I think it takes a lot of work to achieve the level at which the answer is an unequivocal yes.
I am not sure if everybody is missing the point here! As PAA explained countless times, we don’t need the Vilna Gaon nor Avraham Avinu to prove to us that there is a concept of serving G-d without reward, the first post in this thead quoted a Mishna in Avos ?? ??? ??? ???? ???. This thread is dedicated to try work out WHAT PERSONAL MOTIVATION ONE WOULD HAVE TO DO THIS. Which is paradoxical, because if there is personal motivation then it is automatically not ?? ??? ??? ???? ???. So why would – not should – a person do something simply because he feels it morally correct